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- TWIN for Windows/NT Release 2.00 (Intel x86)
-
- Changes and Known Bugs
-
- 22 May 1996
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- Use with Windows/NT v3.5 or v3.51 not with NT v3.0
-
-
- TwinOrion64 Modes tested:
- Colours 8, 16, 32 bpp
- Resolutions dual 640x480 800x600 1024x768 & 1280x1024
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-
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- Changes in 2.00:
- 1) Support for more boards and chipsets
- 2) much newer version of Microsoft S3 code used.
- 3) much faster switching between multiple boards.
- 4) bug removed that made Slave screen of TwinOrion64 all black!
- 5) system warm-boots on machines that previously caused problems
- 6) better handling of systems with embedded TRIOs
-
-
- Changes in 1.03:
-
- 1) Interrupt problems removed
- In some systems interrupts could occasionally get lost. This
- could manifest in a variety of ways, including inability of access
- a SCSI hard disk, system running slowly sometimes
- Most systems would not be affected by this problem.
- A fault has been removed and the interupt problem is believed fixed.
-
- 2) Fast Switching
- On systems with multiple TWIN-ORION 64s providing more than 2 screens,
- the method used to switch between video channels has been re-engineered
- providing a substantial improvement in switching times and thus overall
- performance.
-
- 3) DEC Twin Pentium
- A number of changes have been made to support the DEC Twin Pentium
- machines even thoug these have non-conforming PCI System BIOSes
- and have an interlock problem in either their NT HAL layer or in
- their System BIOS
-
-
- Changes in 1.02:
-
- 1) Multiple TWIN-Orion64s.
- Multiple TWIN-Orion64 are supported allowing more than 2 screens.
-
- 2) Autocad
- A bug affecting the Autocad TextPad has been fixed.
-
- 3) Motherboard TRIO chips
- This release is more tolerant of motherboard TRIO chips. In some
- machines, with earlier versions of TWIN for Windows/NT, a motherboard
- TRIO chip could cause TWIN for Windows/NT to fail.
-
-
- Known Bugs:
-
- 1 MicroStation
-
- i) The initial MicroStation for NT (version 5.00.76.02) runs correctly
- at 8bpp, but draws black at 16, 24 and 32 bpp. Bentley are currently
- Version 5.00.95 runs correctly at all colour depths.
- ii) Early versions of Microstation did not work correctly if "Full Drag"
- is enabled in Control Panel/Desktop. If Full Drag in On, Microstation
- would redraw a view many many times after it has been dragged.
- iii) Early versions of Microstation does not refresh the display correctly
- if backing store has been switched off, resulting in numerous redraws
- and very poor performance.
-
- 2. Paintbrush
- In 'Virtual-Desktop Mode', Paintbrush does not run sucessfully if it is
- not on the left screen. For some drawing operations, Paintbrush constrains
- the cursor to be on the left screen.
- We expect this problem will be resolved by BlackHoles for NT.
-
-
-
- Restrictions:
-
- 1 Maximising Windows.
- In 'Virtual-Desktop Mode', when a window is maximised it ALWAYS expands
- to fill the MASTER screen.
- With the Virtual-Dektop switched OFF, when a window is maximised it
- ALWAYS expands across BOTH screens.
-
- In 'Virtual-Desktop Mode' it is not possible to maximise to the second
- screen, although a maximised window can be dragged from the master to the
- second screen.
-
- Using BlackHoles the user may choose the screen to which an Application
- will be maximised.
-
-
-
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- Supported Hardware
-
- This version detects and uses ISA and VL Orion 928 boards.
- The base address 0x300, 0x320 or 0x340 is found automatically.
- This version should detect and use up to 9 Orion 928 boards..
-
- This version supports as many TWIN-Orion64 boards (PCI) as can
- be plugged into the computer, and mixtures or TWIN-ORion64s and
- Single-Orion64 (TRIO) boards.
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